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A concave spherical mirror forms a virtual image 1.51 times the size of the object. The distance among object and image is 23.3cm. Discover the magnitude of the radius of curvature of the mirror.
when neil armstrong climbed down to the surface of the moon via the 3.5-m tall ladder of the lunar lander his potential
A small spherical cavity of radius r is made in a large electrics (a dielectric material) of constant polarization P. Neglecting the effects of outer boundaries of the electrets find the electric field at the center of the cavity.
You exert a force as shown in the diagram to push a large crate of books (about 1 m high, m = 45.0 kg) across a rough floor at constant speed v = 0.650 m/s. Find the rate at which work is done by you
A riffle with a mass of 3.00kg fires a bullet with a mass of 3.50 x 10 ^ -3 kg at a speed of 330 m/s. What is the recoil speed of the riffle
A car crashes into a wall at 25 m/s and its contents are brought to rest in 0.1s. display that the average force exerted on a 75-kg test dummy by the seat belt is more than 18,000 N.
Balance the meter stick at its center of gravity and hung an unknown mass (e.g. your keys) at the 90 cm mark. Place the 200-g mass on the meter stick at a location until equilibrium is reached. Record this position. what is the advantage of having th..
A golf ball strikes a hard, smooth floor at an angle of 30 ° and, as the drawing shows, rebounds at the same angle. The mass of the ball is 0.047 kg, its speed is 45 m/s just before and after striking the floor. What is the magnitude of the impuls..
A gas enclosed in a container fitted witha piston ofcross-sectional area .10m^2. If 42 J of energy is added to the system by heat duringthe expansion what is the change in internal energy of the system
Suppose you decide to take a trip in your car today. You start out and drive 32 miles in 20 minutes, What is your average speed for the entire trip including when you were parked
You slide a 325 Newton trunk up a 20o incline plane with a constant velocity by exerting a force of 211Newton parallel to the inclined plane. Determine the size and direction of the friction force
The fresh water behind a reservoir dam is 15.0 m deep. A horizontal pipe 3.00 cm in diameter passes through the dam 8.0 m below the water surface, What volume of water flows out of the pipe
a substance has a density of p=200kg/m3. what is the mass of the box full of substance?
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